Investigation of the Bending Bearing Capacity for Wood Modified with Polymers with Nanoparticle Filler

The issues of resource conservation are relevant in our time as never before. The study suggests a way to modify wood by vacuum infusion methods using a polymer composition. This method is relevant in the manufacture of new types of wooden structures, reinforcement of nodes and interfaces. Of the greatest interest are structural elements and manufacturing technologies of wooden structures using modern composite polymer materials with the inclusion of carbon nano-tubes (CNTs) in their composition, which leads to increased strength and rigidity, reduced mate-rial consumption and mounting weight of structures, reduces the effect of anisotropy of proper-ties and defects of wood on the bearing capacity. The wood was impregnated with a polymer composition based on dimethacrylic polyester with a nanostructured filler. At the stage of destruction of samples, during bending tests, the stress level in wood is equal to 25–26% of the temporary bending strength for wood modified with compo-site, and 36–37% - with the addition of carbon nanotube filler to the composite. Experiments on samples have shown the prospects of using a polymer composition to modify wood in order to increase its strength properties.